Cover Illustration: A root of a poplar colonized by the green fluorescent protein-labeled endophytic bacterium Pseudomonas putida VM1453. (Photo courtesy of Kieran Germaine, David Ryan and David Dowling, Department of Applied Biology & Chemistry, Institute of Technology, Carlow, Ireland). On page 583, van der Lelie and colleagues describe a yellow lupin containing a modified endophytic symbiont capable of toluene degradation. See also: Scientific American, Science News, April 12, 2004, 'Plants Dispatched to Decontaminate Soil' Barac T, Tagahavi S, Borremans B, Provoost A, Oeyen L, Colpaert JV, Vangronsveld J, and van der Lelie D. Engineered endophytic bacteria improve phytoremediation of water-soluble, volatile, organic pollutants. Nature Biotechnology 22(5): 583-588 (2004).

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